:root {
  color-scheme: light;
  --ink: #16202a;
  --muted: #667386;
  --line: #d9e2ee;
  --paper: #ffffff;
  --panel: #f4f7fb;
  --soft: #eef5fb;
  --accent: #235f9f;
  --accent-dark: #174876;
  --brand-orange: #f49a21;
  --brand-green: #24856b;
  --shadow: 0 18px 50px rgba(23, 40, 64, 0.1);
}

@font-face {
  font-family: "Montserrat";
  src: url("../palabras-cruzadas/assets/Montserrat-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Montserrat";
  src: url("../palabras-cruzadas/assets/Montserrat-Bold.ttf") format("truetype");
  font-weight: 700 900;
  font-style: normal;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(244, 154, 33, 0.14), transparent 28rem),
    radial-gradient(circle at top right, rgba(36, 133, 107, 0.1), transparent 30rem),
    linear-gradient(180deg, #fbfdff 0%, #eef3f8 100%),
    var(--panel);
  color: var(--ink);
  font-family: "Montserrat", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.app-shell {
  min-height: 100vh;
  padding: 16px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  gap: 22px;
  max-width: 1380px;
  margin: 0 auto;
}

.control-panel {
  align-self: start;
  position: sticky;
  top: 24px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
  scrollbar-width: thin;
  scrollbar-color: #9db7d5 transparent;
}

.control-panel::-webkit-scrollbar {
  width: 8px;
}

.control-panel::-webkit-scrollbar-track {
  background: transparent;
}

.control-panel::-webkit-scrollbar-thumb {
  background: #c7d7ea;
  border-radius: 999px;
}

.control-panel::-webkit-scrollbar-thumb:hover {
  background: #9db7d5;
}

.library-link {
  width: max-content;
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  padding: 0 12px;
  border: 1px solid #d8e4f1;
  border-radius: 999px;
  background: #ffffff;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-decoration: none;
  box-shadow: 0 8px 18px rgba(18, 32, 45, 0.06);
}

.library-link::before {
  content: "";
  width: 8px;
  height: 8px;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
}

.brand-block {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 16px;
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(18, 32, 45, 0.05);
}

.brand-block > div {
  min-width: 0;
}

.brand-block > div::before {
  content: "SCOLATIO.COM";
  display: block;
  margin-bottom: 3px;
  color: var(--brand-green);
  font-size: 0.68rem;
  font-weight: 900;
}

.brand-mark {
  width: 54px;
  height: 54px;
  padding: 6px;
  border: 1px solid rgba(23, 33, 43, 0.08);
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
  box-shadow: 0 10px 22px rgba(18, 32, 45, 0.12);
}

h1 {
  font-size: 1.16rem;
  line-height: 1.08;
  font-weight: 900;
}

.brand-block p {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.25;
}

.controls {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: #334155;
  font-size: 0.86rem;
  font-weight: 700;
}

select,
input[type="text"] {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
  color: var(--ink);
  font-weight: 700;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.button-stack {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
  color: var(--ink);
  cursor: pointer;
  font-weight: 800;
}

button:hover {
  border-color: #9db2ca;
  background: #f8fbff;
}

button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.primary-btn {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.primary-btn:hover {
  border-color: var(--accent-dark);
  background: var(--accent-dark);
}

.activity-panel {
  min-width: 0;
}

.worksheet {
  width: 100%;
  overflow: hidden;
  border: 1px solid #d7e1ec;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 22px 70px rgba(19, 35, 56, 0.13);
}

.worksheet-masthead {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 18px 26px 16px;
  border-top: 8px solid var(--brand-orange);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(244, 154, 33, 0.08), transparent 36%),
    linear-gradient(135deg, #ffffff 0%, #fbfdff 60%, #f4f8fb 100%);
}

.masthead-brand {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
}

.worksheet-logo {
  width: 64px;
  height: 64px;
  padding: 6px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
  box-shadow: 0 12px 24px rgba(18, 32, 45, 0.12);
}

.worksheet-kicker {
  color: var(--brand-green);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

#worksheet-title {
  color: #111827;
  font-size: clamp(1.8rem, 3vw, 2.9rem);
  line-height: 1;
  font-weight: 900;
}

.issue-card {
  min-width: 190px;
  padding: 11px 0 11px 18px;
  border-left: 3px solid var(--accent);
  background: linear-gradient(90deg, rgba(35, 95, 159, 0.04), transparent);
  color: #28384a;
  font-weight: 800;
  text-align: right;
}

.issue-card p {
  max-width: 230px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.issue-card p[hidden] {
  display: none;
}

.student-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 0.58fr);
  gap: 20px;
  padding: 10px 26px;
  border-bottom: 1px solid var(--line);
  background: #fbfdff;
  color: #35465a;
  font-weight: 800;
}

.student-strip p {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: end;
}

.student-strip p::after {
  content: "";
  border-bottom: 1.5px solid #27384a;
  transform: translateY(-3px);
}

.activity-instructions {
  padding: 12px 30px 0;
  color: #172333;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.38;
  text-align: center;
}

.activity-meta {
  margin-bottom: 4px;
  color: #0f766e;
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.activity-instructions p + p {
  margin-top: 2px;
}

.worksheet-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 30px 22px;
}

.color-key {
  border: 1px solid #d7e2ef;
  border-radius: 8px;
  background: #fbfdff;
  overflow: hidden;
}

.color-key h3 {
  padding: 10px 12px;
  border-bottom: 1px solid #d7e2ef;
  background: #eef5fb;
  color: var(--accent-dark);
  font-size: 0.88rem;
  font-weight: 900;
}

.legend-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(185px, 1fr));
  gap: 0;
}

.legend-row {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 5px 9px;
  align-items: center;
  min-height: 52px;
  padding: 8px 10px;
  border-right: 1px solid #e4ecf5;
  border-bottom: 1px solid #e4ecf5;
}

.legend-row:last-child {
  border-right: 0;
}

.legend-code {
  display: grid;
  place-items: center;
  width: 32px;
  height: 28px;
  border: 1px solid #c4d3e3;
  border-radius: 7px;
  background: #ffffff;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 900;
}

.legend-swatch {
  width: 24px;
  height: 24px;
  border: 1px solid rgba(17, 24, 39, 0.24);
  border-radius: 5px;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35);
}

.legend-expression {
  color: #111827;
  font-size: 0.94rem;
  font-weight: 900;
  white-space: nowrap;
}

.legend-color {
  grid-column: 2;
  color: #657386;
  font-size: 0.68rem;
  font-weight: 900;
  text-transform: uppercase;
}

.pixel-stage {
  display: grid;
  width: 100%;
  justify-items: center;
}

.pixel-grid {
  width: min(100%, 900px);
  display: grid;
  grid-template-columns: repeat(var(--grid-size), 1fr);
  grid-auto-rows: 1fr;
  border: 2px solid #182230;
  background: #182230;
  aspect-ratio: 1 / 1;
}

.pixel-cell {
  min-width: 0;
  display: grid;
  place-items: center;
  border: 0.5px solid rgba(17, 24, 39, 0.38);
  background: #fff;
  color: #111827;
  font-size: clamp(0.44rem, 0.76vw, 0.72rem);
  font-weight: 900;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.pixel-cell.is-solution {
  color: transparent;
  text-shadow: none;
}

.worksheet-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 30px 14px;
  border-top: 1px solid var(--line);
  background: #f8fafc;
  color: #5e6b7a;
  font-size: 0.76rem;
  font-weight: 700;
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .control-panel {
    position: static;
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 760px) {
  .app-shell {
    padding: 12px;
  }

  .worksheet-masthead,
  .student-strip,
  .worksheet-body {
    display: grid;
    grid-template-columns: 1fr;
  }

  .issue-card {
    min-width: 0;
    text-align: left;
  }

  .issue-card p {
    max-width: 100%;
  }
}

@media print {
  @page {
    size: A4 portrait;
    margin: 0;
  }

  html,
  body {
    width: 210mm;
    min-height: 297mm;
    background: #fff;
  }

  * {
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  .control-panel,
  .account-widget {
    display: none !important;
  }

  .app-shell {
    padding: 0;
  }

  .workspace,
  .activity-panel {
    display: block;
    width: 210mm;
    max-width: none;
    margin: 0;
  }

  .worksheet {
    width: 210mm;
    height: 297mm;
    display: flex;
    flex-direction: column;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .worksheet-masthead {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) 126pt;
    min-height: 70pt;
    column-gap: 18pt;
    padding: 11pt 42pt 9pt;
    border-top: 8pt solid var(--brand-orange);
  }

  .masthead-brand {
    grid-template-columns: 46pt minmax(0, 1fr);
    gap: 13pt;
    min-width: 0;
  }

  .worksheet-logo {
    width: 46pt;
    height: 46pt;
    box-shadow: none;
  }

  .worksheet-kicker {
    font-size: 7.8pt;
  }

  #worksheet-title {
    max-width: 300pt;
    overflow: hidden;
    font-size: 23pt;
    line-height: 1;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .issue-card {
    justify-self: end;
    align-self: center;
    width: 126pt;
    min-width: 126pt;
    padding: 7pt 0 7pt 12pt;
    background: transparent;
    font-size: 9pt;
  }

  .issue-card p {
    max-width: 114pt;
  }

  .student-strip {
    height: 24pt;
    grid-template-columns: 1fr 155pt;
    gap: 18pt;
    padding: 6pt 42pt;
    font-size: 8.8pt;
  }

  .activity-instructions {
    padding: 8pt 42pt 0;
    font-size: 9pt;
  }

  .worksheet-body {
    flex: 1;
    grid-template-columns: minmax(0, 1fr);
    gap: 10pt;
    padding: 10pt 34pt 8pt;
  }

  .color-key h3 {
    padding: 6pt 8pt;
    font-size: 8.4pt;
  }

  .legend-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .legend-row {
    min-height: 28pt;
    grid-template-columns: 15pt minmax(0, 1fr);
    gap: 2pt 4pt;
    padding: 4pt 5pt;
  }

  .legend-code {
    width: 22pt;
    height: 15pt;
    border-radius: 4pt;
    font-size: 6.6pt;
  }

  .legend-swatch {
    width: 14pt;
    height: 14pt;
  }

  .legend-expression {
    font-size: 7.4pt;
  }

  .legend-color {
    grid-column: 2;
    font-size: 4.8pt;
  }

  .pixel-grid {
    width: 100%;
    max-width: none;
  }

  .pixel-cell {
    font-size: 5.2pt;
  }

  .worksheet-footer {
    padding: 8pt 42pt 10pt;
    font-size: 7.4pt;
  }
}